Near-bit well deviation measuring nipple

Abstract

The utility model discloses a near-bit well deviation measuring nipple. The device comprises an outer pipe, the inner wall of the outer pipe is fixedly connected with a spring, the other end of the spring is fixedly provided with an inner pipe, the inner wall of the inner pipe is fixedly connected with a clamping strip, the inner wall of the inner pipe is connected with a measuring assembly in an inserted mode, the measuring assembly comprises an installation disc, and a sensor is fixedly installed in the installation disc. According to the utility model, the sensors are fixedly mounted on the plurality of mounting discs to form the integral measuring assembly, the measuring assembly is inserted into the inner pipe and clamped in the clamping strips through the clamping grooves to limit the position, the measuring assembly is suspended in the middle through the springs between the outer pipe and the inner pipe, and the vibration amplitude of the inner pipe is reduced through the plurality of springs when external vibration occurs; therefore, the vibration amplitude of the measurement assembly is reduced, the service life of the structure in the measurement assembly is prolonged, and normal signal and electric energy transmission of equipment for measurement is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of well inclination measurement, in particular to a near-drill-bit well inclination measurement short section. Background Art

[0002] Currently, in the oil and gas development drilling construction, near-drill bit devices are used to detect the underground and dynamically measure the well inclination. Usually, it consists of a drill bit, a measuring pup joint, a screw, a communication pup joint and a wireless communication pup joint. The measuring pup joint is equipped with a gamma sensor and a vibration sensor integrated inside to measure the distribution of underground energy and dynamically measure the well inclination data.

[0003] In order to ensure stable measurement data in underground operation, the internal structure of the existing measuring pup joint is designed to be relatively compact. However, the drill bit will generate large vibrations when working underground. The measuring pup joint is connected to the rear of the drill bit and is in a vibrating environment for a long time, which will cause a certain degree of damage to the measuring sensor, shorten its service life, interfere with or interrupt the transmission of signals and electrical energy, and affect the measurement of well inclination and azimuth. Utility Model Content

[0004] The utility model aims to provide a near-drill-bit well inclination measurement short sub to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a near-drill bit well inclination measurement short section, comprising an outer tube, the inner wall of the outer tube is fixedly connected to a spring, the other end of the spring is fixedly installed with an inner tube, the inner wall of the inner tube is fixedly connected to a clamping strip, the inner wall of the inner tube is plugged with a measuring component, the measuring component comprises a mounting plate, a sensor is fixedly installed inside the mounting plate, the outer wall of the mounting plate is provided with a clamping groove, and the clamping groove is clamped on the outer wall of the clamping strip.

[0006] By adopting the above technical solution, the sensor is fixedly mounted on multiple mounting plates to form an integral measuring assembly, and the position is limited by the card slot in the card strip when inserted in the inner tube. The measuring assembly is suspended in the middle by the spring between the outer tube and the inner tube. When external vibration occurs, the vibration amplitude of the inner tube is reduced by the multiple springs, thereby reducing the vibration amplitude of the measuring assembly, improving the service life of the structure inside the measuring assembly, and ensuring the normal transmission of signals and electrical energy for the measurement work of the equipment.

[0007] Preferably, a first thread groove is formed on an outer wall of one end of the inner tube, and a fixing cover is threadedly connected to the first thread groove.

[0008] By adopting the above technical solution, by tightening the fixing cover into the first threaded groove on one end of the inner tube, after the measuring component is plugged in, the measuring component can be pressed against the inside to fix the measuring component and improve the stability of the measuring component inside.

[0009] Preferably, the inner walls at both ends of the outer tube are provided with second thread grooves, a connector is threadedly connected to the second thread groove, and an adapter is fixedly installed at one end of the connector.

[0010] By adopting the above technical solution, the outer tube can be sealed by threading the connector onto the outer tube, making it easy to connect with other short sections for measurement. At the same time, the adapter facilitates electrical connection with other structures to transmit electrical energy and electrical signals.

[0011] Preferably, one end of the data line of the sensor is fixedly connected to a conversion plug, and one end of the conversion plug is plugged into the conversion connector inside the connector.

[0012] By adopting the above technical solution, by connecting all the data lines of the sensor to the adapter plug, and then inserting the adapter plug into the adapter inside the connector, the sensor can be electrically connected to other structures. At the same time, the inner tube and the measuring component will shake slightly during vibration. The traditional direct plug-in method will cause the connection at the plug-in point to be loose. The connection between the data line and the adapter has a certain amount of space for movement, which can avoid the problem of loose connection.

[0013] Preferably, a retaining ring is fixed to one end of the inner tube opposite to the first thread groove, and one end of the measuring component abuts against the inner side of the retaining ring.

[0014] By adopting the above technical solution, when the measuring component is inserted, it can be blocked by the retaining ring at one end of the inner tube. After tightening the fixing cover, the measuring component will be firmly stuck inside, thereby improving the stability of the overall structure.

[0015] Preferably, springs are evenly distributed on the inner wall of the outer tube, the outer wall of the inner tube is fixedly connected to one end of all the springs, and the axis of the inner tube coincides with the axis of the outer tube.

[0016] By adopting the above technical solution, springs are evenly installed between the inner tube and the outer tube, so that the inner tube is suspended inside the outer tube. When the outer tube is vibrated, the vibration amplitude of the inner tube and the measuring component can be reduced.

[0017] Preferably, both ends of the sensor are connected with adapter plugs, both ends of the outer tube are threadedly connected with the same connector, and the adapter plugs are plugged into the adapters on the connector.

[0018] By adopting the above technical solution, by connecting the adapter plugs at both ends of the sensor, it can be connected to the adapters at both ends, which can ensure the normal vibration reduction of the measuring component while ensuring the connection of electrical signals and electrical energy with other short sections before and after the outer tube.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The sensor is fixedly mounted on multiple mounting plates to form an integral measuring assembly. When the sensor is inserted into the inner tube, the position is limited by the card slot in the card strip. The measuring assembly is suspended in the middle by the spring between the outer tube and the inner tube. When external vibration occurs, the vibration amplitude of the inner tube is reduced by the multiple springs, thereby reducing the vibration amplitude of the measuring assembly, prolonging the service life of the structure inside the measuring assembly, and ensuring the normal transmission of signals and electric energy for the measurement work of the equipment;

[0021] (2) By connecting all the data lines of the sensor to the adapter plug and inserting the adapter plug into the adapter inside the connector, the sensor can be electrically connected to other structures. At the same time, the inner tube and the measuring component will shake slightly during vibration. The traditional direct plug-in method will cause the connection at the plug-in to become loose. The connection between the data line and the adapter has a certain amount of space for movement, thus avoiding the problem of loose connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the device of the utility model;

[0023] Figure 2 It is a cross-sectional view of the overall structure of the device of the utility model;

[0024] Figure 3 This is a cross-sectional view of the outer tube structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the measuring component of the utility model.

[0026] In the figure: 1, outer tube; 2, spring; 3, inner tube; 4, clamping strip; 5, first thread groove; 6, fixing cover; 7, measuring component; 701, mounting plate; 702, sensor; 703, clamping slot; 704, adapter plug; 8, second thread groove; 9, connector; 10, adapter. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The following is combined with Figure 1-4 The utility model is described in further detail.

[0029] See also Figures 1 to 4The utility model provides an embodiment: a near-drill-bit well inclination measuring short section, comprising an outer tube 1, the outer tube 1 is used to protect the inner part to move underground, the inner wall of the outer tube 1 is fixedly connected to a spring 2, the other end of the spring 2 is fixedly installed with an inner tube 3, the spring 2 is evenly installed between the inner tube 3 and the outer tube 1, when the outer tube 1 vibrates, the vibration of the inner tube 3 can be reduced, the inner wall of the inner tube 3 is fixedly connected to a clamping strip 4, the inner wall of the inner tube 3 is plugged with a measuring component 7, the measuring component 7 is used to survey underground energy and measure well inclination, the measuring component 7 comprises a mounting plate 701, the interior of the mounting plate 701 is fixedly installed with a sensor 702, The sensor 702 is fixedly mounted on a plurality of mounting plates 701 to form an integral measuring assembly 7, so that the structure is compact and the stability is improved. A card slot 703 is provided on the outer wall of the mounting plate 701, and the card slot 703 is clamped on the outer wall of the clamping strip 4. When inserted into the inner tube 3, the card slot 703 is clamped in the clamping strip 4 to limit the position. The measuring assembly 7 is suspended in the middle by the spring 2 between the outer tube 1 and the inner tube 3. When external vibration occurs, the vibration amplitude of the inner tube 3 is reduced by the plurality of springs 2, thereby reducing the vibration amplitude of the measuring assembly 7, thereby increasing the service life of the structure inside the measuring assembly 7 and ensuring the normal transmission of signals and electrical energy for the measurement work of the equipment.

[0030] See also Figure 2 and Figure 3 A first thread groove 5 is provided on the outer wall of one end of the inner tube 3, and a fixing cover 6 is threadedly connected to the first thread groove 5. The fixing cover 6 is tightened in the first thread groove 5 on one end of the inner tube 3. After the measuring component 7 is inserted, the measuring component 7 can be pressed against the inside to fix the measuring component 7 and improve the stability of the measuring component 7 inside. Second thread grooves 8 are provided on the inner walls of both ends of the outer tube 1, and a connector 9 is threadedly connected to the second thread groove 8. The connector 9 is threadedly connected to the outer tube 1, which can seal the outer tube 1 and facilitate connection with other short sections for measurement. An adapter 10 is fixedly installed at one end of the connector 9, and the adapter 10 is convenient for connection with Other structures are electrically connected to transmit electrical energy and electrical signals. One end of the data line of the sensor 702 is fixedly connected to the adapter plug 704. One end of the adapter plug 704 is inserted into the adapter 10 inside the connector 9. All data lines of the sensor 702 are connected to the adapter plug 704. When the adapter plug 704 is inserted into the adapter 10 inside the connector 9, the sensor 702 can be electrically connected to other structures. At the same time, the inner tube 3 and the measuring component 7 will shake slightly during vibration. The traditional direct plug-in method will cause the connection at the plug-in to be loose. The connection between the data line and the adapter 10 has a certain amount of space for movement, which can avoid the problem of loose connection.

[0031] See also Figures 1 to 4A retaining ring is fixed at one end of the inner tube 3 at the opposite end of the first thread groove 5, and one end of the measuring component 7 is against the inner side of the retaining ring. After the measuring component 7 is inserted, it can be blocked by the retaining ring at one end of the inner tube 3. After tightening the fixing cover 6, the measuring component 7 will be firmly stuck inside, improving the stability of the overall structure. The inner wall of the outer tube 1 is evenly distributed with springs 2, and the outer wall of the inner tube 3 is fixedly connected to one end of all the springs 2, and the axis of the inner tube 3 coincides with the axis of the outer tube 1. The springs 2 are evenly installed between the inner tube 3 and the outer tube 1, so that the inner tube 3 is suspended outside. Inside the tube 1, when the outer tube 1 is vibrated, the vibration amplitude of the inner tube 3 and the measuring component 7 can be reduced. Both ends of the sensor 702 are connected with adapter plugs 704. Both ends of the sensor 702 are connected with adapter plugs 704, which can be connected with adapters 10 at both ends to ensure normal vibration reduction of the measuring component 7. Both ends of the outer tube 1 are threadedly connected with the same connector 9, and the adapter plugs 704 are plugged into the adapter 10 on the connector 9 to ensure the connection of electrical signals and electrical energy with other short sections before and after the outer tube 1.

[0032] Working principle: The sensor 702 is fixedly mounted on multiple mounting plates 701 to form an integral measuring assembly 7, which is inserted into the inner tube 3 and is clamped in a limited position in the clamping strip 4 by the clamping groove 703. The measuring assembly 7 is suspended in the middle by the spring 2 between the outer tube 1 and the inner tube 3. When external vibration occurs, the vibration amplitude of the inner tube 3 is reduced by the multiple springs 2, thereby reducing the vibration amplitude of the measuring assembly 7.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A near-bit well deviation measurement sub, comprising an outer tube (1), characterized in that: The inner wall of the outer tube (1) is fixedly connected to a spring (2); the other end of the spring (2) is fixedly mounted with an inner tube (3); the inner wall of the inner tube (3) is fixedly connected to a clamping strip (4); the inner wall of the inner tube (3) is plugged with a measuring component (7); the measuring component (7) comprises a mounting plate (701); a sensor (702) is fixedly mounted inside the mounting plate (701); a clamping groove (703) is provided on the outer wall of the mounting plate (701); and the clamping groove (703) is clamped on the outer wall of the clamping strip (4).

2. The near-bit inclination measurement sub according to claim 1, characterized in that: A first thread groove (5) is formed on the outer wall of one end of the inner tube (3), and a fixing cover (6) is threadedly connected to the first thread groove (5).

3. The near-bit inclination measurement sub according to claim 1, characterized in that: Second thread grooves (8) are provided on the inner walls of both ends of the outer tube (1), a connector (9) is threadedly connected to the second thread groove (8), and an adapter (10) is fixedly mounted on one end of the connector (9).

4. The near-bit inclination measurement sub according to claim 3, characterized in that: One end of the data line of the sensor (702) is fixedly connected to a conversion plug (704), and one end of the conversion plug (704) is plugged into an adapter (10) inside the connector (9).

5. The near-bit inclination measurement sub according to claim 2, characterized in that: A retaining ring is fixed to one end of the inner tube (3) opposite to the first thread groove (5), and one end of the measuring component (7) abuts against the inner side of the retaining ring.

6. The near-bit inclination measurement sub according to claim 1, characterized in that: The inner wall of the outer tube (1) is evenly distributed with springs (2), the outer wall of the inner tube (3) is fixedly connected to one end of all the springs (2), and the axis of the inner tube (3) coincides with the axis of the outer tube (1).

7. The near-bit inclination measurement sub according to claim 1, characterized in that: Both ends of the sensor (702) are connected to adapter plugs (704), both ends of the outer tube (1) are threadedly connected to the same connector (9), and the adapter plugs (704) are plugged into adapters (10) on the connector (9).

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